A router is a computer and networking device that forwards data packets between computer networks, including internetworks such as the global Internet.
Rack containing a service-provider–class router connected to multiple networks
A carrier class router with 10G/40G/100G interfaces and redundant processor/power/fan modules
A typical home or small office DSL router showing the telephone socket (left, white) to connect it to the internet using ADSL, and Ethernet jacks (right, yellow) to connect it to home computers and printers.
The first ARPANET router, the Interface Message Processor, was delivered to UCLA August 30, 1969, and went online October 29, 1969.
A computer network is a set of computers sharing resources located on or provided by network nodes. Computers use common communication protocols over digital interconnections to communicate with each other. These interconnections are made up of telecommunication network technologies based on physically wired, optical, and wireless radio-frequency methods that may be arranged in a variety of network topologies.
Network Packet
Fiber-optic cables are used to transmit light from one computer/network node to another.
Computers are very often connected to networks using wireless links.
An ATM network interface in the form of an accessory card. A lot of network interfaces are built-in.
